{
 "ocl_version": "0.1.0",
 "name": "Chemin de la Cascade",
 "slug": "chemin-de-la-cascade-3",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 33.51398463285591,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 31.0,
   "end_distance_m": 33.0,
   "start_elevation_m": 541.5861831107472,
   "end_elevation_m": 542.2564628034044,
   "min_gradient_pct": -81.9264569633674,
   "suppressed_max_gradient_pct": 81.68009814266952,
   "suppressed_location_m": [
    12.0,
    14.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.29158524630111,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 32.0,
   "end_distance_m": 35.0,
   "start_elevation_m": 541.8666347420599,
   "end_elevation_m": 542.7453822994489,
   "min_gradient_pct": -69.6938368474927,
   "suppressed_max_gradient_pct": 76.6559375246743,
   "suppressed_location_m": [
    12.0,
    15.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 27.661886118232815,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 28.0,
   "end_distance_m": 33.0,
   "start_elevation_m": 540.8733684974927,
   "end_elevation_m": 542.2564628034044,
   "min_gradient_pct": -59.25404216026436,
   "suppressed_max_gradient_pct": 67.70480608148318,
   "suppressed_location_m": [
    10.0,
    15.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.411573142138195,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 570.0,
   "end_distance_m": 580.0,
   "start_elevation_m": 610.5972241781074,
   "end_elevation_m": 613.1383814923212,
   "min_gradient_pct": -36.550908651602185,
   "suppressed_max_gradient_pct": 51.04334929458673,
   "suppressed_location_m": [
    9.0,
    19.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.831925681434996,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 564.0,
   "end_distance_m": 584.0,
   "start_elevation_m": 609.202740720752,
   "end_elevation_m": 613.969125857039,
   "min_gradient_pct": -25.59223691986972,
   "suppressed_max_gradient_pct": 41.965939442061426,
   "suppressed_location_m": [
    10.0,
    30.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.306810375001987,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 564.0,
   "end_distance_m": 589.0,
   "start_elevation_m": 609.202740720752,
   "end_elevation_m": 615.0294433145025,
   "min_gradient_pct": -28.345801352090348,
   "suppressed_max_gradient_pct": 38.77535854868074,
   "suppressed_location_m": [
    10.0,
    35.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.095741500230133,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 563.0,
   "end_distance_m": 613.0,
   "start_elevation_m": 609.048695648975,
   "end_elevation_m": 619.0965663990901,
   "min_gradient_pct": -18.544672409478608,
   "suppressed_max_gradient_pct": 34.28830658060497,
   "suppressed_location_m": [
    7.0,
    57.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.9626979811311,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 238.0,
   "end_distance_m": 338.0,
   "start_elevation_m": 560.9626599484627,
   "end_elevation_m": 579.9253579295938,
   "min_gradient_pct": -2.7706776465186067
  }
 ],
 "shape": {
  "ascent_concentration": 0.29,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 358.0,
  "shape_class": "sustained"
 },
 "length_m": 674.656030050118,
 "start_elevation_m": 531.1306312255596,
 "end_elevation_m": 627.2492003242419,
 "endpoint_gain_m": 96.11856909868231,
 "overall_gradient_pct": 14.247048098205239,
 "accumulated_ascent_m": 106.10136484760505,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 27.661886118232815,
   "start_distance_m": 28.0,
   "end_distance_m": 33.0,
   "midpoint_distance_m": 30.5,
   "start_elevation_m": 540.8733684974927,
   "end_elevation_m": 542.2564628034044,
   "start_xy": [
    1022398.2022809477,
    6302027.406216436
   ],
   "end_xy": [
    1022402.8225708911,
    6302029.3092607865
   ]
  },
  "max_10m": {
   "gradient_pct": 25.411573142138195,
   "start_distance_m": 570.0,
   "end_distance_m": 580.0,
   "midpoint_distance_m": 575.0,
   "start_elevation_m": 610.5972241781074,
   "end_elevation_m": 613.1383814923212,
   "start_xy": [
    1022744.334951609,
    6301841.904308033
   ],
   "end_xy": [
    1022754.1555698831,
    6301840.472365612
   ]
  },
  "max_20m": {
   "gradient_pct": 23.831925681434996,
   "start_distance_m": 564.0,
   "end_distance_m": 584.0,
   "midpoint_distance_m": 574.0,
   "start_elevation_m": 609.202740720752,
   "end_elevation_m": 613.969125857039,
   "start_xy": [
    1022738.6808607014,
    6301843.91210683
   ],
   "end_xy": [
    1022758.1398612107,
    6301840.475721988
   ]
  },
  "max_25m": {
   "gradient_pct": 23.306810375001987,
   "start_distance_m": 564.0,
   "end_distance_m": 589.0,
   "midpoint_distance_m": 576.5,
   "start_elevation_m": 609.202740720752,
   "end_elevation_m": 615.0294433145025,
   "start_xy": [
    1022738.6808607014,
    6301843.91210683
   ],
   "end_xy": [
    1022763.1067280578,
    6301841.0503816465
   ]
  },
  "max_50m": {
   "gradient_pct": 20.095741500230133,
   "start_distance_m": 563.0,
   "end_distance_m": 613.0,
   "midpoint_distance_m": 588.0,
   "start_elevation_m": 609.048695648975,
   "end_elevation_m": 619.0965663990901,
   "start_xy": [
    1022737.7385122168,
    6301844.246739963
   ],
   "end_xy": [
    1022785.9230026533,
    6301847.676790148
   ]
  },
  "max_100m": {
   "gradient_pct": 18.9626979811311,
   "start_distance_m": 238.0,
   "end_distance_m": 338.0,
   "midpoint_distance_m": 288.0,
   "start_elevation_m": 560.9626599484627,
   "end_elevation_m": 579.9253579295938,
   "start_xy": [
    1022520.7461353807,
    6302060.637175553
   ],
   "end_xy": [
    1022595.7565474943,
    6301996.607826916
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -59.25404216026436,
   "start_distance_m": 108.0,
   "end_distance_m": 113.0,
   "midpoint_distance_m": 110.5,
   "start_elevation_m": 546.3135992321877,
   "end_elevation_m": 543.3508971241745,
   "start_xy": [
    1022423.1503155002,
    6302080.480549764
   ],
   "end_xy": [
    1022420.5771305065,
    6302084.767590583
   ]
  },
  "min_10m": {
   "gradient_pct": -36.550908651602185,
   "start_distance_m": 104.0,
   "end_distance_m": 114.0,
   "midpoint_distance_m": 109.0,
   "start_elevation_m": 546.9163834512634,
   "end_elevation_m": 543.2612925861032,
   "start_xy": [
    1022425.2088634953,
    6302077.050917109
   ],
   "end_xy": [
    1022420.0624935078,
    6302085.624998747
   ]
  },
  "min_20m": {
   "gradient_pct": -25.59223691986972,
   "start_distance_m": 94.0,
   "end_distance_m": 114.0,
   "midpoint_distance_m": 104.0,
   "start_elevation_m": 548.3797399700771,
   "end_elevation_m": 543.2612925861032,
   "start_xy": [
    1022430.0867191019,
    6302068.326997883
   ],
   "end_xy": [
    1022420.0624935078,
    6302085.624998747
   ]
  },
  "min_25m": {
   "gradient_pct": -28.345801352090348,
   "start_distance_m": 88.0,
   "end_distance_m": 113.0,
   "midpoint_distance_m": 100.5,
   "start_elevation_m": 550.4373474621971,
   "end_elevation_m": 543.3508971241745,
   "start_xy": [
    1022432.8434519143,
    6302062.997793045
   ],
   "end_xy": [
    1022420.5771305065,
    6302084.767590583
   ]
  },
  "min_50m": {
   "gradient_pct": -18.544672409478608,
   "start_distance_m": 73.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 98.0,
   "start_elevation_m": 552.646050685555,
   "end_elevation_m": 543.3737144808157,
   "start_xy": [
    1022436.0505408335,
    6302048.942451927
   ],
   "end_xy": [
    1022419.554634504,
    6302094.552197958
   ]
  },
  "min_100m": {
   "gradient_pct": -2.7706776465186067,
   "start_distance_m": 72.0,
   "end_distance_m": 172.0,
   "midpoint_distance_m": 122.0,
   "start_elevation_m": 552.5274058525524,
   "end_elevation_m": 549.7567282060338,
   "start_xy": [
    1022435.4877472332,
    6302048.1158544645
   ],
   "end_xy": [
    1022463.7226520441,
    6302093.113407553
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 33.51398463285591,
   "start_distance_m": 31.0,
   "end_distance_m": 33.0,
   "midpoint_distance_m": 32.0,
   "start_elevation_m": 541.5861831107472,
   "end_elevation_m": 542.2564628034044,
   "start_xy": [
    1022400.9498938491,
    6302028.607063737
   ],
   "end_xy": [
    1022402.8225708911,
    6302029.3092607865
   ]
  },
  "max_3m": {
   "gradient_pct": 29.29158524630111,
   "start_distance_m": 32.0,
   "end_distance_m": 35.0,
   "midpoint_distance_m": 33.5,
   "start_elevation_m": 541.8666347420599,
   "end_elevation_m": 542.7453822994489,
   "start_xy": [
    1022401.88623237,
    6302028.958162262
   ],
   "end_xy": [
    1022404.6952479333,
    6302030.011457835
   ]
  }
 },
 "diagnostic_note": "Windows <=3 m are at raster-noise scale (1-sigma raster noise alone is roughly +/-7 pp at 2 m and +/-5 pp at 3 m on a 1 m DTM). Diagnostic use only: never a headline or ranking value.",
 "quality_summary": {
  "structure_suppression": {
   "masked_fraction": 0.065,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0
   ],
   "windows_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.105,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.398,
   "obstruction_max_height_m": 16.91,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50
   ]
  },
  "excluded_ranges_m": [
   [
    9.0,
    17.0
   ],
   [
    21.0,
    26.0
   ],
   [
    40.0,
    46.0
   ],
   [
    53.0,
    58.0
   ],
   [
    60.0,
    92.0
   ],
   [
    106.0,
    115.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "sample_interval_m": 1.0,
  "interpolation": "bilinear",
  "smoothing": "none",
  "gradient_windows_m": [
   5.0,
   10.0,
   20.0,
   25.0,
   50.0,
   100.0
  ],
  "diagnostic_windows_m": [
   2.0,
   3.0
  ],
  "elevation_crs": "EPSG:2154",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/fr/ign-lidarhd_dtm_E1022-N6301_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1022-N6302_0m5.tif"
  ],
  "calculated_at": "2026-09-17T02:46:43+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-alps4",
  "elevation_provider": "IGN LiDAR HD MNT 0.5 m",
  "elevation_licence": "Licence Ouverte / Open Licence 2.0 (Etalab) \u2014 \u00a9 IGN, LiDAR HD (MNT/MNS), data.geopf.fr; reproduction autoris\u00e9e avec mention de la source et de la date",
  "elevation_dataset": "LiDAR HD \u2014 MNT (sol) et MNS (surface), 0,50 m (Institut national de l'information g\u00e9ographique et foresti\u00e8re), RGF93 / Lambert-93 EPSG:2154, altitudes IGN69",
  "elevation_vertical_datum": "IGN69",
  "elevation_tile_ids": [
   "E1022-N6301",
   "E1022-N6302"
  ],
  "elevation_blocks": [
   "21LHD8RP@2025-03-06"
  ],
  "ign_dalles": [
   "LHD_FXX_1022_6302_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1022_6303_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD8RP"
  ],
  "ign_editions": [
   "2025-03-06"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1022_6302_MNT_O_0M50_LAMB93_IGN69": "2025-03-06",
   "LHD_FXX_1022_6303_MNT_O_0M50_LAMB93_IGN69": "2025-03-06"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 33,
   "stations_resolved": 33,
   "width_median_m": 5.0,
   "width_p10_m": 2.15,
   "width_min_m": 1.25,
   "width_max_m": 8.25,
   "bounded_share": 0.545,
   "unbounded_share": 0.455,
   "confidence_median": 0.533,
   "width_median_bounded_m": 4.88,
   "window_m": [
    564.0,
    589.0
   ],
   "width_at_max25_m": 5.75,
   "window_stations": 7,
   "single_track": false,
   "single_track_rule": "PROVISIONAL (2026-09-15): width_p10_m <= 3.0 m with bounded_share >= 0.6; recorded, not a rule",
   "status": "ok",
   "source": "dtm",
   "station_m": 25.0,
   "window_station_m": 5.0,
   "halfwidth_m": 6.0,
   "step_m": 0.25,
   "level_tol_m": 0.12,
   "break_min_m": 0.3,
   "stations_failed": 0,
   "hedge_to_hedge": {
    "stations": 33,
    "stations_resolved": 33,
    "width_median_m": 3.75,
    "width_p10_m": 1.75,
    "width_min_m": 1.25,
    "width_max_m": 10.25,
    "bounded_share": 0.879,
    "unbounded_share": 0.121,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.5,
    "window_m": [
     564.0,
     589.0
    ],
    "width_at_max25_m": 5.75,
    "window_stations": 7,
    "status": "ok",
    "source": "dsm",
    "station_m": 25.0,
    "window_station_m": 5.0,
    "halfwidth_m": 6.0,
    "step_m": 0.25,
    "level_tol_m": 0.5,
    "break_min_m": 0.3,
    "stations_failed": 0
   }
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Courmes",
  "county": "Alpes-Maritimes",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}